0.9.0 In a presentation "R Tools for Portfolio Optimization", Yollin recommends the function portfolio.optim() in library(tseries) that can be used to overcome the idiosyncratic risk. We want to analyze and compare the results of function efficient.frontier() in "PlusBullet" R script and Yollin's effFrontier() function, which utilizes portfolio.optim() function in library(tseries).